General Question

Does separating people into generations serve a purpose?

I’m not sure there is a valid reason to mark the passing of time in terms of generations of people being alike in some way. Baby Boomers, Gen X, the new Millennials, are we any more alike because of our generation as opposed to being alike because of the state/country we live in, or what type of food we like.

Does the idea of a generation tell us something about each other? If so, do you personally identify with a generation? Do you think of others in terms of a generation? Not age, but the culture at a person’s date of birth.